Highest temperature in Paris on July 15?

Platform comparison

Market context

Paris will experience its peak daily heat at the Paris-Le Bourget Airport Station on 15 July 2026, with the market resolving to the specific Celsius range containing that highest recorded temperature. The crowd currently assigns a 0% implied probability to the YES outcome, suggesting consensus that the temperature will fall outside the offered range, likely viewing the threshold as unattainably high for mid-July in the city.

Historically, Paris mid-July highs typically hover between 25°C and 30°C, though heatwaves have pushed readings past 35°C, as seen in 2019 and 2022 when temperatures reached 42.6°C and 39.8°C respectively at nearby stations. The current 0% pricing implies the market expects a standard summer day rather than an extreme anomaly, yet the 2019 record demonstrates that contrarian value exists if atmospheric conditions align for a sudden surge, making the underdog position potentially lucrative if forecasts shift toward a blocking high-pressure system.

Traders should monitor the European Centre for Medium-Range Weather Forecasts (ECMWF) 10-day ensemble projections for the next 48 hours, as a developing ridge over Western Europe could act as the primary catalyst for a temperature spike. Recent analysis from Meteo France indicates that while current models favour average conditions, a slow-moving Atlantic trough could divert warmer air masses toward the Seine Valley by mid-month, creating a volatile setup where the consensus view may be premature.

Methodology

This page reviews Highest temperature in Paris on July 15? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Who Will Win, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Who Will Win. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Who Will Win trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.